Comment on 'Parameters identification of chaotic systems by quantum-behaved particle swarm optimization' [Int. J. Comput. Math. 86(12) (2009), pp. 2225-2235]

This note comments on a published article Parameters identification of chaotic systems by quantum-behaved particle swarm optimization'. In this article, similarity between time series obtained from chaotic systems is considered as a measure of similarity between them; however, it is well known that this method is not suitable for chaotic systems.